For me, one of the biggest issues with integration tests is the code coverage numbers mean nearly nothing. I've seen an "integration only" tester proudly displ

For me, one of the biggest issues with integration tests is the code coverage numbers mean nearly nothing. I've seen an "integration only" tester proudly display his single test with 90% coverage. I asked him to run it again and it was 2% because a condition changed. So this means that for all the branches your code can take, an integration test is taking one specific one at each point all the way through for that test. All over branches, through the entire call stack are unverified.